/*
 * style.css — Gnoke OBD2
 * Palette: old instrument panel — vellum parchment, mahogany red, dirty olive.
 * Feels like a 1970s Porsche gauge cluster, not a hospital wall.
 */

@import url('https://fonts.googleapis.com/css2?family=DM+Mono:wght@400;500&family=Playfair+Display:wght@700&family=DM+Sans:wght@300;400;600&display=swap');

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

/* ─── DESIGN TOKENS ─────────────────────────────────────────────── */
:root {
  /* Base — warm parchment */
  --bg:           #f5ede0;          /* aged vellum */
  --text:         #1e1208;          /* near-black walnut */
  --muted:        #9a8068;          /* tanned leather */
  --border:       #ddd0bc;          /* aged cream seam */
  --surface:      #fdf8f1;          /* off-white, warm not sterile */

  /* Accent — old mahogany / rust red */
  --accent:       #7c3626;          /* oxidised red-brown */
  --accent-dim:   rgba(124,54,38,.18);
  --accent-lt:    rgba(124,54,38,.07);

  /* Status indicators */
  --red:          #9e2a1c;          /* brick red */
  --green:        #4a6b3a;          /* dirty olive / field green */
  --orange:       #b85c1a;          /* burnt amber */
  --blue:         #2a5f8f;          /* steel blue */
  --red-lt:       rgba(158,42,28,.10);
  --green-lt:     rgba(74,107,58,.12);

  /* Typography */
  --font-sans:    'DM Sans', sans-serif;
  --font-mono:    'DM Mono', monospace;
  --font-display: 'Playfair Display', serif;

  /* Layout */
  --topbar-h:     56px;
  --radius:       10px;
  --radius-sm:    6px;
  --radius-lg:    14px;
}

/* Dark mode — smoked mahogany, like a car interior at night */
[data-theme="dark"] {
  --bg:        #120c08;             /* very dark walnut */
  --text:      #edddc8;             /* warm parchment */
  --muted:     #5c4838;             /* aged leather */
  --border:    #2a1e14;             /* dark seam */
  --surface:   #1c1208;             /* dark wood panel */
  --accent-lt: rgba(124,54,38,.30);
  --red-lt:    rgba(158,42,28,.18);
  --green-lt:  rgba(74,107,58,.18);
}

/* ─── BASE ──────────────────────────────────────────────────────── */
html, body {
  width: 100%; height: 100dvh;
  background: var(--bg); color: var(--text);
  font-family: var(--font-sans);
  -webkit-font-smoothing: antialiased;
  overflow: hidden;
  display: flex;
  flex-direction: column;
}

/* ─── TOPBAR ────────────────────────────────────────────────────── */
#topbar {
  height: var(--topbar-h);
  background: var(--surface);
  background-image: linear-gradient(
    160deg,
    rgba(124,54,38,.04) 0%,
    transparent 55%
  );
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 0 16px;
  flex-shrink: 0;
  position: relative;
  z-index: 100;
}

#hamburger {
  display: none;
  background: none;
  border: none;
  font-size: 1.2rem;
  color: var(--text);
  cursor: pointer;
  padding: 6px 8px;
  border-radius: var(--radius-sm);
  line-height: 1;
  transition: background 0.15s;
}
#hamburger:hover { background: var(--accent-lt); }

/* Brand */
#brand {
  display: flex;
  align-items: baseline;
  gap: 6px;
  text-decoration: none;
}
#brand-gnoke {
  font-family: var(--font-mono);
  font-size: 0.62rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--accent);
}
#brand-app {
  font-family: var(--font-display);
  font-size: 1.1rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--text);
}

/* Connection status badge */
.conn-indicator {
  display: flex;
  align-items: center;
  gap: 5px;
  margin-left: 10px;
}
#status-dot {
  width: 7px; height: 7px;
  border-radius: 50%;
  background: var(--muted);
  transition: background 0.3s, box-shadow 0.3s;
  flex-shrink: 0;
}
#conn-status {
  font-family: var(--font-mono);
  font-size: 0.62rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--muted);
}

.topbar-spacer { flex: 1; }

/* ─── MENU GROUP (desktop dropdowns) ────────────────────────────── */
.menu-group {
  display: flex;
  gap: 2px;
  align-items: center;
}

.menu { position: relative; }

.menu-btn {
  background: none;
  border: none;
  padding: 6px 10px;
  border-radius: var(--radius-sm);
  font-family: var(--font-sans);
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--text);
  cursor: pointer;
  transition: background 0.15s;
  white-space: nowrap;
}
.menu-btn:hover { background: var(--accent-lt); }

.menu-content {
  display: none;
  position: absolute;
  top: calc(100% + 6px);
  right: 0;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 5px;
  min-width: 190px;
  box-shadow: 0 8px 28px rgba(0,0,0,.12);
  z-index: 200;
  flex-direction: column;
  gap: 1px;
}
.menu:hover .menu-content,
.menu:focus-within .menu-content {
  display: flex;
}

.menu-content button {
  background: none;
  border: none;
  padding: 8px 11px;
  border-radius: var(--radius-sm);
  font-family: var(--font-sans);
  font-size: 0.82rem;
  color: var(--text);
  text-align: left;
  cursor: pointer;
  transition: background 0.12s;
  width: 100%;
}
.menu-content button:hover { background: var(--accent-lt); }
.menu-content button.active {
  color: var(--accent);
  font-weight: 600;
}
.menu-content hr {
  border: none;
  border-top: 1px solid var(--border);
  margin: 4px 0;
}

/* ─── TOPBAR RIGHT (connect controls + theme) ───────────────────── */
#topbar-right {
  display: flex;
  align-items: center;
  gap: 6px;
  margin-left: 6px;
}

#mode {
  padding: 5px 8px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.04em;
  cursor: pointer;
  max-width: 110px;
}
#mode:focus { outline: 2px solid var(--accent); outline-offset: 2px; }

#conn-btn {
  padding: 6px 14px;
  background: var(--accent);
  color: #fff;
  border: none;
  border-radius: var(--radius-sm);
  font-family: var(--font-sans);
  font-size: 0.8rem;
  font-weight: 600;
  cursor: pointer;
  transition: opacity 0.15s, transform 0.1s;
  white-space: nowrap;
}
#conn-btn:hover  { opacity: 0.88; }
#conn-btn:active { transform: scale(0.97); }
#conn-btn:disabled { opacity: 0.55; cursor: not-allowed; }

/* Status chip (flash feedback) */
#status-chip {
  display: none;
  font-family: var(--font-mono);
  font-size: 0.58rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  padding: 3px 8px;
  border-radius: 20px;
  background: var(--green);
  color: #fff;
}
#status-chip.show { display: inline-block; }
#status-chip.err  { background: var(--red); }

.icon-btn {
  background: none;
  border: none;
  padding: 6px 7px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  font-size: 1rem;
  line-height: 1;
  transition: background 0.15s;
}
.icon-btn:hover { background: var(--accent-lt); }

/* ─── MAIN CONTENT AREA ─────────────────────────────────────────── */
.pages {
  flex: 1;
  overflow: hidden;
  position: relative;
  /* ambient radial glow — gives depth like a lit instrument panel */
  background:
    radial-gradient(ellipse at 75% 85%, rgba(124,54,38,.06) 0%, transparent 55%),
    radial-gradient(ellipse at 15% 15%, rgba(74,107,58,.04) 0%, transparent 45%),
    var(--bg);
}

/* ─── VIEWS (pages) ──────────────────────────────────────────────── */
.view {
  display: none;
  position: absolute;
  inset: 0;
  flex-direction: column;
  gap: 14px;
  padding: 20px;
  overflow-y: auto;
}
.view.active { display: flex; }

.view::-webkit-scrollbar { width: 5px; }
.view::-webkit-scrollbar-track { background: transparent; }
.view::-webkit-scrollbar-thumb { background: var(--border); border-radius: 10px; }
.view::-webkit-scrollbar-thumb:hover { background: var(--muted); }

/* ─── PAGE HEADER ────────────────────────────────────────────────── */
.page-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
}
.page-header h1 {
  font-family: var(--font-display);
  font-size: 1.45rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--text);
}
.page-header .sub {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  letter-spacing: 0.06em;
  color: var(--muted);
  margin-top: 3px;
}
.page-header-actions {
  display: flex;
  gap: 7px;
  align-items: center;
  flex-wrap: wrap;
}

/* ─── SURFACE CARDS ─────────────────────────────────────────────── */
.gauge-container {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.display-box {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 16px;
  text-align: center;
}
.display-box > div:first-child {
  font-family: var(--font-mono);
  font-size: 0.58rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 5px;
}
.display-box > div:nth-child(2) {
  font-size: 2rem;
  font-weight: 600;
  color: var(--accent);
}
.display-box > div:last-child {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  color: var(--muted);
  margin-top: 3px;
}

.mini-gauge {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 14px;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
}
.mini-gauge-label {
  font-family: var(--font-mono);
  font-size: 0.57rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--muted);
}

/* ─── BUTTONS ────────────────────────────────────────────────────── */
.btn-primary {
  width: 100%;
  padding: 11px 16px;
  border-radius: var(--radius-sm);
  border: none;
  background: var(--accent);
  color: #fff;
  cursor: pointer;
  font-family: var(--font-sans);
  font-size: 0.85rem;
  font-weight: 600;
  transition: opacity 0.15s, transform 0.1s;
  /* subtle warm sheen */
  background-image: linear-gradient(160deg, rgba(255,255,255,.08) 0%, transparent 60%);
}
.btn-primary:hover  { opacity: 0.88; }
.btn-primary:active { transform: scale(0.98); }

.btn-secondary {
  padding: 7px 12px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text);
  cursor: pointer;
  font-family: var(--font-sans);
  font-size: 0.8rem;
  font-weight: 600;
  transition: border-color 0.15s, background 0.15s;
}
.btn-secondary:hover {
  border-color: var(--accent);
  background: var(--accent-lt);
  color: var(--accent);
}

/* ─── DTC CARDS ──────────────────────────────────────────────────── */
.dtc-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-left: 3px solid var(--red);
  padding: 12px 14px;
  border-radius: var(--radius-sm);
  margin-bottom: 8px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.dtc-code {
  font-family: var(--font-mono);
  font-weight: 500;
  font-size: 0.88rem;
  color: var(--red);
}
.dtc-desc {
  font-size: 0.78rem;
  color: var(--muted);
}
.dtc-status,
.dtc-empty {
  padding: 24px;
  text-align: center;
  color: var(--muted);
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.04em;
}
.dtc-error {
  padding: 16px;
  text-align: center;
  color: var(--red);
  font-family: var(--font-mono);
  font-size: 0.72rem;
}

/* ─── CHART ──────────────────────────────────────────────────────── */
#data-chart {
  width: 100%;
  height: 200px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
}

/* ─── RECORDER ───────────────────────────────────────────────────── */
.recorder-controls {
  display: flex;
  gap: 8px;
  align-items: center;
}

/* ─── LOGS ───────────────────────────────────────────────────────── */
.log-shell {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 14px 16px;
  flex: 1;
  overflow-y: auto;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  line-height: 1.8;
  color: var(--muted);
}
.log-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 12px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--border);
}
.log-title {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--accent);
  font-weight: 500;
}

/* ─── CONFIG CARDS ───────────────────────────────────────────────── */
.config-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 18px 20px;
}
.config-card label {
  font-family: var(--font-mono);
  font-size: 0.62rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
  display: block;
  margin-bottom: 8px;
}
.config-card select {
  width: 100%;
  padding: 9px 12px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-sans);
  font-size: 0.85rem;
}
.config-card p {
  font-size: 0.8rem;
  line-height: 1.65;
  color: var(--muted);
  margin-top: 8px;
}
.config-card p strong { color: var(--text); font-weight: 600; }
.config-card-title {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--accent);
  font-weight: 500;
  margin-bottom: 10px;
}

/* ─── HINT TEXT ──────────────────────────────────────────────────── */
.hint {
  font-size: 0.8rem;
  line-height: 1.65;
  color: var(--muted);
}
.hint strong { color: var(--text); font-weight: 600; }

/* ─── TOAST ──────────────────────────────────────────────────────── */
#toast {
  position: fixed;
  bottom: 28px;
  left: 50%;
  transform: translateX(-50%) translateY(10px);
  background: var(--text);
  color: var(--surface);
  padding: 9px 18px;
  border-radius: 20px;
  font-family: var(--font-sans);
  font-size: 0.8rem;
  font-weight: 500;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.2s, transform 0.2s;
  z-index: 999;
  white-space: nowrap;
}
#toast.show { opacity: 1; transform: translateX(-50%) translateY(0); }
#toast.ok   { background: var(--green); }
#toast.err  { background: var(--red);   }

/* ─── MOBILE DRAWER ──────────────────────────────────────────────── */
#drawer-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,.32);
  z-index: 300;
  backdrop-filter: blur(2px);
}
#drawer-overlay.open { display: block; }

#drawer {
  position: fixed;
  top: 0; left: 0; bottom: 0;
  width: 264px;
  background: var(--surface);
  background-image: linear-gradient(
    180deg,
    rgba(124,54,38,.05) 0%,
    transparent 40%
  );
  border-right: 1px solid var(--border);
  z-index: 400;
  transform: translateX(-100%);
  transition: transform 0.24s ease;
  display: flex;
  flex-direction: column;
  overflow-y: auto;
}
#drawer.open { transform: translateX(0); }

#drawer-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 16px 14px;
  border-bottom: 1px solid var(--border);
  flex-shrink: 0;
}
#drawer-brand { display: flex; align-items: baseline; gap: 6px; }
#drawer-gnoke {
  font-family: var(--font-mono);
  font-size: 0.6rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--accent);
}
#drawer-app {
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 700;
  color: var(--text);
}
#drawer-close {
  background: none;
  border: none;
  color: var(--muted);
  cursor: pointer;
  font-size: 1rem;
  padding: 4px 6px;
  border-radius: var(--radius-sm);
  transition: background 0.15s;
}
#drawer-close:hover { background: var(--accent-lt); }

/* Drawer connect widget */
.drawer-connect {
  padding: 12px 14px;
  border-bottom: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.drawer-connect-status {
  display: flex;
  align-items: center;
  gap: 6px;
  font-family: var(--font-mono);
  font-size: 0.6rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 2px;
}

/* Drawer nav */
.drawer-section {
  font-family: var(--font-mono);
  font-size: 0.57rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--muted);
  padding: 14px 16px 5px;
}

.drawer-btn {
  display: flex;
  align-items: center;
  gap: 10px;
  width: 100%;
  background: none;
  border: none;
  text-align: left;
  padding: 9px 16px;
  font-family: var(--font-sans);
  font-size: 0.85rem;
  color: var(--text);
  cursor: pointer;
  transition: background 0.12s;
}
.drawer-btn:hover  { background: var(--accent-lt); }
.drawer-btn.active {
  color: var(--accent);
  font-weight: 600;
  background: var(--accent-lt);
}
.drawer-btn.danger { color: var(--red); }

/* ─── ABOUT VIEW ──────────────────────────────────────────────────
   Sits outside .pages so needs its own positioning context.
────────────────────────────────────────────────────────────────── */
.about-view {
  position: fixed;
  top: var(--topbar-h);
  left: 0; right: 0; bottom: 0;
  background:
    radial-gradient(ellipse at 75% 85%, rgba(124,54,38,.06) 0%, transparent 55%),
    radial-gradient(ellipse at 15% 15%, rgba(74,107,58,.04) 0%, transparent 45%),
    var(--bg);
  z-index: 50;
}

/* ─── CARD GRID ───────────────────────────────────────────────── */
.card-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
}
@media (min-width: 640px) {
  .card-grid { grid-template-columns: repeat(2, 1fr); }
}

/* ─── FORM CARD ───────────────────────────────────────────────── */
.form-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 18px 20px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.card-title {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent);
  font-weight: 500;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--border);
}

/* ─── ABOUT TABLE ─────────────────────────────────────────────── */
.about-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.8rem;
}
.about-table td {
  padding: 5px 0;
  color: var(--muted);
  vertical-align: top;
}
.about-table td:first-child {
  font-family: var(--font-mono);
  font-size: 0.66rem;
  letter-spacing: 0.04em;
  color: var(--text);
  width: 38%;
  padding-right: 10px;
}
.about-table tr + tr td {
  border-top: 1px solid var(--border);
  padding-top: 6px;
}

/* ─── ABOUT LINKS ─────────────────────────────────────────────── */
.about-links {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin-top: 4px;
}

.btn-outline {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 7px 13px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--surface);
  color: var(--text);
  font-family: var(--font-sans);
  font-size: 0.78rem;
  font-weight: 600;
  text-decoration: none;
  cursor: pointer;
  transition: border-color 0.15s, background 0.15s, color 0.15s;
}
.btn-outline:hover {
  border-color: var(--accent);
  background: var(--accent-lt);
  color: var(--accent);
}
.btn-outline.coffee {
  border-color: var(--orange);
  color: var(--orange);
}
.btn-outline.coffee:hover {
  background: rgba(184,92,26,.08);
}

/* ─── RECORDING PULSE ────────────────────────────────────────────── */
@keyframes pulse {
  0%, 100% { opacity: 1; }
  50%       { opacity: 0.4; }
}
.recording-indicator { animation: pulse 1s infinite; }

/* ─── READINESS ──────────────────────────────────────────────────── */
.readiness-monitor {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 11px 14px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  margin-bottom: 7px;
}
.readiness-monitor.ready     { border-left: 3px solid var(--green);  }
.readiness-monitor.not-ready { border-left: 3px solid var(--orange); }

/* ─── RESPONSIVE ─────────────────────────────────────────────────── */
@media (max-width: 768px) {
  #hamburger    { display: flex; }
  .menu-group   { display: none; }
  #mode         { max-width: 80px; font-size: 0.62rem; }

  .view { padding: 14px; gap: 10px; }

  .page-header h1 { font-size: 1.2rem; }

  #topbar-right { gap: 4px; }
}

@media (max-width: 420px) {
  #mode { display: none; } /* mode select hidden; drawer handles it */
  #brand-app { font-size: 1rem; }
}